I'm confused. You keep asking about Japanese monitors and buttons/sticks, while showing links to American cabs as examples, and asking for the 'original' specs of a cabinet for CPS2... All for emulation as the endpoint. Also, why was Arcade1up brought up at all in a conversation about original parts? They did not use Sanwa parts. They source their own, cheaper stuff to build down to a cost in a non-commercial environment. While A1up does re-release licensed games today, they are likely not considered authentic or original by anyone who takes the arcade hobby even somewhat seriously, nor are they legally allowed for use in a commercial environment.
To repeat what
@MegaMan and
@astro_zombie138 said, Capcom games in the 90's era (the heyday of JAMMA) weren't typically sold on a dedicated cab basis. If you were an operator in the US, you would order just order the CPS1/2 board, and throw it plus the marquee/art into whatever arcade cabs you had on hand, which was most likely from the Texas based company Dynamo.
Since you aren't very clear about this: Do you want an original style
American or
Japanese cab? What does original spec and parts even mean, by your definition?
If you want to build an "original" or "period correct" American style stand up cab, then you're looking for American parts. That would typically mean a Wells Gardner 25" monitor like a k7400, along with Industrias Lorenzo sticks and buttons (or SUZOHAPP, but IL is better quality). Sanwa sticks/buttons and Nanao chassis CRTs were never used in American cabs. They were used in Japanese cabs. Even then, those specific brands weren't used 100% of the time. Sega Astro Cites and others used Seimitsu sticks and buttons quite often. Building a USA style cab from scratch isn't out of the question, since USA cabs are typically not as well taken care of, and built out of easily damaged MDF. I doubt Sanwa controls were common at all in the USA until around 2008ish or after, when SF4 began revitalizing fighting games.
If you want a Japanese cab, then you're better off just buying a existing cab and refurbishing it, since most cabs are built out of resin/plastic or metal shells. Those cabs typically (but not always) use the Nanao and Sanwa parts that you keep asking about, so using those parts would be "original" in that sense. A Blast City would probably be the best option if you're so focused on getting a Nanao monitor and Sanwa controls, although owning a Blast CIty is a bit of a pain, especially for people new to arcade ownership. New Net City is another one, except the monitor would be a Sanwa PFX. Both the Blast and NNC are tri-sync, which would work better for stuff like Naomi, if that matters. While less common than Astro City, they also aren't crazy rare to find in the US either (the NNC might be rarer now, especially with how desirable the PFX is).
If Fightcade is the only thing you intend to play on the cab, then I'm not entirely sure any of this matters, since you would be going through a bunch of expense and hassle just to connect a PC to JAMMA and a 15khz monitor. You would almost certainly need to add another external monitor connected to your PC just to make Windows useable. It would be much easier just getting a Unico Nova Blast (which should just support a PC in a plug and play fashion), and calling it a day. Heck, you could even run actual arcade boards on it too without much trouble. A cheaper route would be getting a Chewlix with Sanwa controls. You could replace the existing LCD with a good quality high refresh gaming monitor and have a setup that would also work seamlessly with modern games in addition to Fightcade.
